PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19152081-3 2009 For the genetic changes closely related to etiology of liver cancer, the well-known cases include insertion and integration of the hepatitis B virus (HBV) DNA after infection, and mutations at site 249 of the tumor suppressor gene p53 induced by exposure to aflatoxin B1. Aflatoxin B1 258-270 tumor protein p53 Homo sapiens 231-234